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W. H. HARRISON. Ourtain Fixture.

No" 232,963. Patented OCT. 5,1880.

NITE STATES PATENT rare.

WILLIAM H. HARRISON, OF NEWARK, NEWV JERSEY, ASSIGN OR TO HIMSELF,TIMOTHY IV. LORD, AND FRANK B. ALLEN, OF SAME PLACE.

FIXTURE.

SPECIFIOATION forming part of Letters Patent No. 232,963, dated October5, 1880.

- Application filed December 4, 1879.

To all whom it may concern Be it known that I, WILLIAM H. HARRI- soN, ofthe city of Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Shade-Rollers; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to letters ofreference marked thereon, whichform a part of this specification.

My invention relates, generally, to that class of shade-rollers in whichthe roller is provided with a spiral spring for the purpose ofautomatically winding up the shade, the latter being held at anyadjustment by means of a sliding pin engaging with a notched spindle.

The present invention relates in particular to the construction of theplate which carries the sliding pins; and it consists in constructingthat plate with bosses which are to be fitted into recesses formed inthe roller to prevent the said plate from turning, said bossesbeingprovided with lateral channels which are to inclose the sliding pins onall sides so as to effectually keep them in place, by reason of whichconstruction there is economy of metal and a more satisfactory workingof parts, taking the fixture as a whole.

In the drawings, Figure 1 is a plan view of a shaderoller embodying myimprovement. Fig. 2 is an end view of the same. Figs. 3 and 6 aremodifications of the invention, and Figs. 4 and 5 are detail views,showing the shouldered spindle.

Similar-letters of referenceindicatelikeparts in each of the severalfigures.

In carrying out my invention I construct a plate, A, through the centerof which is a circular aperture, a, to allow the spring-bearing spindleb to pass, and having one or more (in the present case three radialborings or channels, c, passing from the circumference to thebefore-mentioned central aperture, bosses d being formed on the surfaceof said plate to al' low the requisite thickness of metal for saidborings. Within the latter I place short me-. 50 tallic bars, 6, thatfreely slide therein, and

which act in connection and engage with stopshoulders f on the spindle.The bosses on the surface of the plate, being set into grooves in theend of the roller in the manner indicated in Fig. 1, prevent the platefrom sliding from its proper fixed position when in operation. The plateA is also held upon the roller-body B by means of a metallic ferrule, G,with its outer edge slightly returned upon said plate. Said ferrule alsocovers the periphery of said plate and prevents the bars 6 from droppingout of the borings or channels therein.

Should it be more convenient, the invention can be modified by strikingup, with a die, the plate A, Figs. 3 and 6, leaving radial channels c,as indicated in the said figures, for the reception of the sliding bars0, this plate A to be supplemented by a plate, in, attached to theferrule, which plates, acting in conjunction, produce substantially thesame results as the plate A, previously described.

In operating my invention, as the plate A is brought over with theroller-body when the curtain is drawn down by the hand, the upper mostsliding bar falls and engages with the shoulder of the spindle, and ifthe hand is withdrawn from the curtain, comes in contact with theshoulder f, and thus holds the curtain stationary. When it is desired toraise the curtain it is first slightly pulled to disen- 8o gage the bar,and then allowed to run up quickly, when the centrifugal force thusgenerated tends to throw the bars outward away from any contact with theshoulders; but, however, when the upward movement of the curtain ischecked the above-mentioned centrifugal force becomes inoperative, andthe uppermost bar falls into engagement with the shoulder and againholds the curtain stationary. c

I do not claim a notched spindle, nor sliding pins to engage therewith,nor a plate with studs on the back to fit into notches in the end of theroller, nor a plate formed with guides for the pins; but expresslydisclaim 5 them all separately.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-- In a shade-roller having a notched spindle 10oand turned by a spring and held to the desired adjustment by slidingpins adapted to engage with the notches in the spindle, the plate A,formed with bosses d, fitted into recesses in the end of the roller toprevent said plate from turning, the said bosses being formed withchannels 0, for inclosing sliding pins e on all sides and combined withcap 0, which holds plate A against the end of the roller and the slidingbars in the bosses, as 10 shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this10th day of November 1879.

WILLIAM H. HARRISON.

Witnesses:

OLIVER DRAKE, E. 1. DRAKE.

